21575000

素因数分解:

$2^3\times 5^5\times {\mathrm{863}}^1$

素因数の和:894

約数の個数: 48

約数和(自身を含む): 50621760

約数和(自身を除く): 29046760

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 863, 1000, 1250, 1726, 2500, 3125, 3452, 4315, 5000, 6250, 6904, 8630, 12500, 17260, 21575, 25000, 34520, 43150, 86300, 107875, 172600, 215750, 431500, 539375, 863000, 1078750, 2157500, 2696875, 4315000, 5393750, 10787500, 21575000]

約数ペア:

[(1, 21575000), (2, 10787500), (4, 5393750), (5, 4315000), (8, 2696875), (10, 2157500), (20, 1078750), (25, 863000), (40, 539375), (50, 431500), (100, 215750), (125, 172600), (200, 107875), (250, 86300), (500, 43150), (625, 34520), (863, 25000), (1000, 21575), (1250, 17260), (1726, 12500), (2500, 8630), (3125, 6904), (3452, 6250), (4315, 5000)]